Su Heng refused Fang Zian's request without giving Fang Zian any face, and was even a little annoyed. He felt that Fang Zian was making trouble with him. At this moment, he was immersed in making steam engines and could never get away. He wanted to do other things, so he angrily left Fang Zian and went back to work on his own.

Seeing Fang Zian standing there in embarrassment, Qian Kang consoled him: "Brother Zian, Master Su has this temper. Don't blame him. He is indeed very busy and under great pressure these days. In this way, you Leave the drawings and I will persuade him later and take the time to let him take a look."

Fang Zian smiled bitterly and shook his head: "Well, I did go too far. It's better not to bother him about this matter. It's not too important. I actually don't intend for him to do it personally, I just want him to give me some advice. , just look at the design on my drawing to see if there are any flaws."

Su Lei, who was standing aside, suddenly said: "Brother Fang, can you let me see this drawing?"

Fang Zian smiled and said, "Of course."

Su Lei took a few drawings handed over by Fang Zian, spread them on the ground and looked at them. He smiled for a while and said, "Brother Fang, these things don't seem to be difficult. I can help you make them."

Fang Zian was overjoyed and said, "Can you do that?"

Su Lei sniffed and said, "Don't forget, I am Su Heng's son."

Fang Zian slapped his forehead and said with a smile: "Oh, aren't I confused? You are Master Su's son. As the saying goes, a tiger father has no dog son, so naturally you have learned a lot of things that ordinary people cannot know. Are you willing to help me? Did you create it? Do you want to tell your father?"

Su Lei nodded and said: "Of course I have to tell him, otherwise, he will beat me."

Fang Zian nodded and said: "Then you go ask your father. If he refuses, don't force it. I don't want him to beat you."

Su Lei nodded and walked quickly to the hay shed. Fang Zian watched from a distance as he walked timidly to Su Heng and said something. Su Heng raised his head and glared at him, then turned to look at himself. Fang Zian was busy and distant. He raised his hands and begged. Su Heng turned his head and said a few words to his son. Su Lei then unfolded the drawing for Su Heng to see, and made some gesticulating gestures. Su Heng looked at the drawing, then at his son, and then at the square. Zian finally nodded. He pointed at the drawing and said a few words to Su Lei. Su Lei nodded repeatedly. He quickly gathered the drawing and walked towards Fang Zian with a smile.

Fang Zian knew that the matter was done. Su Heng agreed. Sure enough, Su Lei came to Fang Zian and whispered excitedly with a smile: "Dad agreed, and Daddy also gave me some guidance."

Fang Zian said happily: "Great. Let's do this. You prepare some materials and tools according to the drawings. I will pick you up early tomorrow morning and go to the station inside Qiantang Gate to build it on site. There are ready-made wood and a lot of manpower there. It's up to you. How about blending?"

Su Lei nodded and said, "Okay. I'll prepare the things I need to use. I'll take time to ask dad about some key points in the evening. I believe it can be made. I can finally make something alone for the first time."

The next morning, a blacksmithing stove was set up on the teaching ground where Qiantangmen was stationed. Fang Zian selected seven or eight soldiers to help, and soon the teaching ground became lively. There was the sound of tinkering and axes chiseling wood.

rang out, and the work of building fire-fighting tools officially began.

Fang Zian designed several types of fire-fighting equipment. The first one is the water dragon. It is unimaginable for people to put out fires without a water dragon. They rely on the primitive leather bag to hold water and pierce the leather bag to extinguish the fire, or use buckets and wooden basins to splash water.

Using a pump to moisten the water, or using a so-called "hemp" shaped like a mop to dip the water into the fire is not what a regular fire-fighting team should do. You must have a water dragon that can spray water for a long time. If you want to

It can achieve the effect of spraying water. Since there is no power to pressurize the water, Fang Zian can only use the principle of water tower to deliver water. He designed a water truck that can raise the water tank to a certain height and use the water pressure to spray water.

In fact, it is not that difficult. There are two ways. One is to set up a wooden crane and lift the water tank into the air. This method is simple and effective, but it is a bit time-consuming and laborious. After all, the wooden crane needs to be built on site and requires more than a dozen rods.

Assembling long logs and a large number of ropes also requires a huge space. It takes a long time, is not convenient and fast, and is subject to site constraints. After all, not all fire locations are spacious enough to build a wooden crane. Not all

The fire can wait for a long time to prepare. What Fang Zian wants is a faster and more convenient way to raise the water tank anytime and anywhere. That requires mechanical power.

The type of lifting device designed by Fang Zian is a cross-type lifting device. It is similar to the way an iron fence door is erected. When it is not needed to be lifted, the iron bars are folded and hidden under the waterwheel. When needed, the iron bars are extended crosswise to lift the water tank.

It rises to a height as high as one person. This creates a considerable water pressure and can spray water to the second floor or even higher.

The problem is that there is no power device or hydraulic device, and Fang Zian needs a huge water tank to ensure sufficient water. That is a big problem. Fang Zian’s solution is to rotate and jack up. That is, in the water tank

A thick circular spiral iron rod is installed below, and another iron shaft that fits the spiral slot is connected to the winch at the rear of the car. When the winch is turned by human or animal power, the two spiral iron shafts engage and rotate, creating a huge

The force of jacking pushes the water tank up. The iron fences at the four corners serve as auxiliary support. After jacking up, they are fixed with latches. They can be fixed at different heights to adjust according to different fire conditions.

To be honest, this thing seems a bit stupid, but that is compared to later generations. In this era, it is already very remarkable to be able to come up with a spiral-shaped lifting force and turn the lifting force into the turning force of the winch.

It is an exquisite design. Otherwise, the large water tank designed by Fang Zian and filled with thousands of kilograms of water would be completely unable to be raised to a considerable height in a short time by manpower.

The reason why Fang Zian asked Su Heng for help was that the difficulty lay in making the two interlocking and lifting spiral iron rods. This was not something Fang Zian could do by himself. It had to be done by a professional. Of course, this

This device does not need to be too delicate, as long as it can bite, does not slip, and is sturdy and usable. That's why Fang Zian dared to ask Su Lei to help.

Su Lei is young, but he is indeed nurtured by his family, passed down by three generations of masters, and has the style of a general in his work. Under his methodical command, hundreds of iron bars were forged, and Fang Zian's design was even more exquisite.

,increase

It added double hole hinges and horizontal iron bolt support on the side. It is more stable and secure than the single hole anchoring in Fang Zian's design and the method of carving grooves on the iron bar itself. When Fang Zian was amazed, Su Lei fell over.

He was not greedy for merit and told Fang Zian that this was the result of his father's guidance.

By evening, four iron fence-style retractable bases had begun to take shape. Under the leadership of Li Dalong, a heavy cart base made of thick wood had also been completed.

"That's almost it. Let's continue tomorrow, not at this moment. Brother Xiao Lei, come with me back home. Let's have a good meal and sleep, and come back tomorrow." Fang Zian stopped with a smile. Su Lei was also a little bit a little bit.

Tired, he nodded and agreed. Fang Zian asked Lei Hu and the others to keep a good watch tonight, and took Su Lei home. He ordered people to prepare some good food and rice. Su Lei was not old, but he had a big appetite, so he had a full meal.

took a shower and went to bed.

The next morning, everything continued. The most critical point was the construction of two lifting spiral spindles. Because it was a thick iron shaft six feet long, each one weighed at least three hundred kilograms, so

It was quite difficult to build it. Fang Zian originally thought that this kind of thing would need to be poured into a mold, but he didn't expect that Su Lei had to build it directly on an iron rod. His method was to use a wedge-shaped iron drill, and when the iron rod was red-hot

After that, while laying it across the anvil, he aligned the iron drill in the right direction, and then struck it one after another with a sledgehammer. This created a spiral groove along the periphery of the iron rod. Of course, this saves time, but it is very laborious to operate.

Difficulty.

Fang Zian decided to use the wheel hammer himself because the strength and accuracy of the blow needed to be guaranteed. Su Lei was young and not strong enough. Others may have enough strength, but not enough control. Whether they hit it deep or shallow, it was a failure. One step was needed.

Solve the problem in place.

After testing the strength, the formal operation began. The iron rod burned red for a while. Li Dalong and Lei Hu and another man used iron pliers to clamp the iron rod, lifted it out and placed it in the semicircular groove of the anvil.

Su Lei used thin pliers to hold the iron drill and aligned it in position, and shouted: "Come on!"

Fang Zian hammered down, sparks flew everywhere and made a clanging sound. A slanted groove appeared on the iron rod. Su Lei said with great joy: "Beautiful, the force is just right. Hurry, give it a few more blows and take advantage of the heat."

After a few sparks flew, a complete spiral groove appeared, with perfect strength and depth. While Su Lei praised it, he quickly used a small hammer to tap the arc inside the groove with an iron drill, and beat the thread into a wide inner and outer shape.

Narrow shape, this is the key point to prevent it from slipping after bite.

It took a full two hours, and a black iron rod with spiral grooves and the thickness of a bowl was finally formed. Although it was completely made, it did not look rough and was extremely beautiful.

After a short rest after lunch, everyone continued their work, and in the evening, another spiral rod was completed. At this point, the main components of the entire waterwheel jacking were completed. The waterwheel including the wheel body shaft and water tank

The construction was basically completed. Everyone couldn't wait to see the final look, so they all suggested to work on it overnight. Fang Zian was also looking forward to it, so he agreed to assemble it overnight. This night, the torches and lanterns were brightly lit in the church, and there was a loud banging sound.
Chapter completed!